US1889169A - Dump car construction - Google Patents

Description

5 Sheets-Sheet 1 Jima/W' ARGV/ E CAMPBELL A. CAMPBELL .DUMP CAR CONSTRUCTION Filed Nov. 27, 1929 Nov.` 29, 1932-.

Nov. 29, 1932. A, CAMPBELL 1,889,169

` DUMP CAR CONSTRUCTION Filed Nov. 27, 1929 5 Sheets-Sheet 2 NOV. 29, 1932. A, CAMPBELL 1,889,169

' DUMP GAR coNsTnUcTIoN Filed Nov. 27, 1929 5 Sheets-Sheet 3 ARGV/.E CAMPBELL Nov. 29, 1 932. A'. CAMPBELL DUMP CAR CONSTRUCTION Filed Nov. 27, 1929 5 Sheets-Sheet 4 574/), CA MPBE LA Nov. 29, 1932. A.. CAMPBELL 1,839,169

DUMP GAR CONSTRUCTION Filed Nov. 27, 1929 5 sheets-Sheet 5 Afm/LE CAMPBELL d/Zi; L2/541g, M L.

Patented Nov. 29, 1932 Unire serres ice ARGYLE CAMPBELL, OE'Y CHICAGO, ILLINOIS, ASSIG-NOR TO ENTERPRSE RAILWAY iEQUPMENT CGMNY, 0F CECAGO, ILLNOIS, .A CRPOR-ATION OF ILLlNOS i DUMP CAR constriauorion Appr-carina mea november a?, 1929. serial no. 41eme.

My invention relates to dump car construen tion.

An object oi my invention is to provide an improved construction ior dump cars of the level floortype and especially 'that class oi car -having a wooden {ioor ofappreciable thick nes's wherebydischargedoors may be inset in the wood Hoor, and a substantially level floor obtained with tiohtly fitting doorsfwhen the doors are in closed position.

Anotherobject of my invention is to body in a car of the substantially level floor type self contained door framing adapted to provide edge ioor plates around the edges of the doors and further provide `a rigid tramework' adapted to brace the oar framing and ear sides adjacent the door openings.

Still another object of' my invention. is to provide an improved floor constructionyin a 2 car having` a door of appreciable thicknessv whereby discharge doors maybe inset in the wooden flooring and clearances provided in lthe plane of the door for the door'operating mechanism. i

Still another further object of my invention is to improve the construction of dump Vcars of the type having transversely hinged vdoors adapted tobe operated by'means or Adoor operating shafts extending'through the 3 longitudinal load carrying members of the car, whereby the shafts will extend through the loadcarrying members adjacent the horizontal neutral axes of the same and thus avoid weakening or cutting out vital parts of the load carr in@ members ont the car. b

My invention further resides in the arrangement of doors relative to adjacent lined ldoor sections whereby large vdumping capacity isattained with comparatively small dumping area.

Other objects Voft the invention will'more clearly appear 'in the description and claims hereinafter inserted.

For further comprehension of my invention, reference maybe had'to the accompanying dra-wings wherein:

Fig. Vl indicates a longitudinal elevationalV sectionalview of a composite carstructure emr bodying my invention, said view being takenv to one side of the center of the car and showing approximately half the length of the car;

Fig. 2 is a plan view, on an enlarged sca-le, of aportion of the car showing so much of the car construction as to include a pair of doors with the related car construction incidental thereto; i i f Y l? ig. 3 is a vertical longitudinal sectional view tal-:en substantially on the line 3*3 of Fig. 2; .L

Fig. Ll is a fragmentary vertical longitudinal sectional view showing the construction oi" the car adjacent the center sill, saidview being tahen substantially on the line lil-4 of 2 and illustrating the door mechanism through the framework `and on a line corresponding substantiallyto alineS-S of Fig. 7.

In `said drawings, my .improved construc- 'tion is shown as applied to a composite car generally designated as a mill type car. rlhis type of car, which is preferably provided with a wooden floor of appreciable thickness, is especially adapted for hauling products of steel mills such as structural steel, rails,*pipe andv other similar long and heavy materials. vCars for this service are therefore 'usually provided with movable end walls and are characterized by the absence of interior gussets or other forms of interior 4bracing such as would extend intothe car loading space. The absence of interior bracing is compensated for by theV employmentor1 a generous number of side stakes and crossbeams which, while providing the necessary strength, also reduces the distances between crossbeams, and this, combined with the wooden door, presents diiiiculties in securing adequate dumping facilities while maintaining level floor, tight-door joints and retaining the strength qualities ofthe car.

In said drawings, A indicates the trucks of th-e car; B the center sill structure; C the body bolsters; D and E transverse crossbeams; 'F metallic side truss frame construction;`G wooden side walls; H Wooden floor; J dump door frames; K-K dump doors disposed on opposite sides of the center sill and between adjacent crossbeains D and E; L door' operating shafts; M door winding mechanisms; N shaft rotating and locking means; and O car end wall.

The center sill structure B consists of two longitudinally extending flanged beam members 10-10 arranged in spaced relation and united by a top cover plate 11, said plate having overhanging portions extending appreciably beyond the upper flanges of the center sill beam-members. Only one of the body bclsters is shown (Fig. l) and is indicated conventionally by top and bottom cover plates, 12 and '13 respectively.

The transverse ciossbeain members D and E (Figs. 1, 3 and Ll) are of somewhat similaiconstruction, differing only in the arrangement of cover plates, said niemb rs being each-composed of two diaphragme 14-11 each formed of pan shape and presenting vertical web 15 and flanges 16. Disposed Vin substantially the same line as diaphragms 141 and between the center sills are fillers 17. Crossbeams D are each provided with top and bottom cover plates as indicated at 18.*and 19, respectively, the former extending from side to side of the' car and formed of extended width and disposed to one side of the ldiaphragm for the purpose tobe hereinafter pointed out. Crossbeams'E are also provided with top and bottom cover plates as indicated at 20 and 21 respectively, the former being of special shape for the purpose `to be hereinafter pointed out.

The side frame construction F (Fig 1) is of the truss type including topl chord 22 and bottom chord 23, the latter being of channel shape with the flanges turned inwards and interengaging with thek crossbeam vdiaphragnis and constituting a side sill. The side truss construction is divided into twelve `panels by means of vertical intermediate side stakes 24 and corner stakes 25, the side stakes by diagonal braces 26. The side wall G includes wooden boards 27 and metallic plates Q8, all bolted or riveted to the side framing just described.

The wooden floor H is of appreciable thicknessl and rests on the center sill, crossbeams, 'body holsters and side channels, the top or upper surfaces of these members being substantially in the same plane. Said wooden floor H consists of fixed floor sections as indicated at 29, 30, 31 and 32, and interinediate said licor sections are dumping openings 33 (Fig. 1).

The fixed floor sections 29 are disposed at each end of the car over the trucks and each said's'ection takes iii two panels lengthwise of the car, terminating substantially in alignment with the crossbeam nearest the body bolster. Fixed floor section 30, which likewise takes in two panels, is disposed at the central portion of the car. In the three panels intermediate the fixed floor sections 29 and 30 at each end of car are the dump door frames J (Figs. 1 and 7) and the fixed floor section 31, the latter being disposed in the panel between the respective door frames J.

The fixed floor sections 32 extend over the center sill and are disposed in the framework vsupporting members beneath the same, thus supporting said edge portions and preventing breakage thereof. I f

Extending from side to side of the car and between the pair of crossbeams D and E in each panel having dumping doors are the door frames J, 'said frames in cooperation with the dumping doors K being adapted to complete the flooring of the car intermediate the fixed floor sections. As the frames J are all of the same general construction, the description hereinafter following will be 'confined toone frame.

and rea-r Aedges of the doors, theformer also constituting the top cover plate of erossbeani E, said members preferably extending from' side to side of the car. The transverse members are connected lengthwise of the car by angle shaped members 35 (Fig. 7) disposed adjacent each side wall of the car, and by longitudinal plates 36 disposed adjacent each`.

side of the center sill structure. Each said angle shaped member 35 includes a vertical wall 37 (Fig. 5) secured to the verticaljside stakes and diagonal members of the car side framing by rivets, as indicated at 38. Thel i adjacent wall 39 of the angle member extends horizontally into overlapping relation with the transverse members and is united lthereto by rivets 40. Each of said members 35 adjacent one of the stakes extends lengthwise of the car beyond the transverse members ofthe framing, in order to effect a secure connection with the side framing and floor structure.

The plates 36 are formed at each end with a portion of reduced width 41 disposed at onev i Each frame J includes transi lversely extend ng floor plate members 20 and A3l, respectively disposed adjacent the front Iii .side of the door opening and said portion41 is crimped at 42 and extended beneath .the

ladjacent transverse member and united forma continuation 'oi theupper licor surface of the Wooden floor H, and operates to span the dista-nce intermediate the :tree edge of the doors and the outer edge of the related `ixedfloor Wooden section. Said iioor plate section45 is rigidiiied adjacent its outer edge by an angle shapedmember 47 having one of its flanges 48 secured to the plate and having its adjacent flange 49 vertically disposed. Said member preferably extends clear across the car, and at the center sill an angle Vmeniber 50 is secured by one of its tlanges 51to said depending flange 49 and to the center sill by' its other flange 50. .Y Intermediate the side wall of thecar and thecenter sill, the floor section 45 is vfurtherbraced on each side of the center sill to the crossbeain by ari-angle shaped bracket 52 (Figs. 7 and 8). Said ramemember J is :further secured to the iinderfraine through the medium ofniembers 34 and 36 by means oli' bolts, as indicatedvat 53 and 153, respectively, the former extending vthrough the flange of the crossbeain and the latter through the overhanging portionof the center sill top cover plate. The horizontal plate sections 34, 36, 39 and 45 are arranged to have their edges projecting slightly into v the plane of the door to thereby provide seaiing edge plates ext-ending across the gap b'e tween the fixed floor sections and the edges of the doors. Wooden filler blocks 135 are disposed between Vjthe top of the side sill and the horizontal llange 39 of the rainemeinber and retained in place by bolts 235 5).

The discharge doors K are mounted on a-es eXtendingtransvei-sely of the car and arerinet'in'the loor of the car from the under side to present floor surfaces coinciding substantially with the plane of the upper licor surface of the liXed wooden lioor sections, said doors being arranged in' pairs of two doors, each door of the pair beingv disposed on opposite sides of the cent-er sill intransversely aligned relation. As the doors are 'of' similar construction and the mounting thereof identical, the description will be con- Vlined t0 oneV door only. Each door is prei4 erably of metal, including a body portion54 which is formed of pan shape with side., iront and rear flanges, as indicated at 55, 56 and 57, respectively, the rear edge oi the door being curved as at 58 (Fig. 3) on a radius substantially concentric with the hinge `airis of the door and tangentially related with respect to the rear-edge plate 3410i the iraniing whereby the curved surface ofthe door will bein a definite relation to said edge plate in all positions to which the door is swung. The door is pivotally mounted on hinge brackets 59, which in turn are secr-.red to the web l5 of the assocated crossbeain diaphragm 14, each said bracket being` termed with 1apwardly extending portions disposed above the crossbeam and adapted to receive door hinge pivot 60, the latter being disposed in the plane of the wooden floor, therebyreducing the extent of fixed floor area rearwardly of the door. VThe placement of the dumping `doorsrelatively .to the fixe floor sections `is of importance and more especially so in so far as the doors nearest the end Vof the car are coiicerned,;ior the reason that the gravity discharge of vthe end `load must necessarily be led away through only one set of doors, whereas the gravity discharge of the load from. the intermediate floor sections is led away by twol sets oin4 doors or from each end of said iiied floor secf" ions. This condition is illustrated in Fig. 1 by the dotted sloping lines Gl, (S2-62, and 63, represent'ng the slope of the ladingleft in the cai' with the doors open, assuming the slope to be the usual 30 degree from horizontal of the conventional hopper car. t will therefore be noted that in view of the length of the side slope 61, the

placement of the end door opening as Jfar rearward as possible has a marked eiiect inincreasing 'tlie'percentage'of gravity discharge load. To accomplish tlis end, the crossbeam diaphragins are oils-et to one side of the vertical stakes, and the crossbeain top cover plates are oils-et to Vone side of the dia-- phragnis, thus .permitting the pla-cement .of the door openings immediately adjacent the diaphragms. This offset construction, conibined with the placement of the axes olf the doors in the plane of the wooden floor, results in the end doors being located as near the end crossbeain daphragni as practicable,l and consequently as near the end of the car as practicable inasmuch as the end crossbeams Aare in turn located as near the wheels of the car assale clearances will permit.

straps GG, the latter being adapted to'receive pivot 60. Atp their other ends, said hinge beams connect adjacent the end of the door ith a `Z shaped marginal member 67, the latter extending along the free edge of the door. Intermediate the hinged end of the door and said nieniber?, there is anadditional reinforcing member 68, preferably of angle shape.

The doors are adapted to be operated in pairs Voit two transversely aligned doors by means of a door-operating shaft L common p so to the two doors (Figs. 3, 4 and 5), said shaft extending along the free edge of and below the level of said doors. The shaft extends from side to side of the car through the center sills and one of the side sills, and is mounted in elongated bearings respectively carried by the center sills and side sills. The bearings at the center sill are indicated at 69 and the bearings at the respective side sills are indicated at 70 and 7l, respectively, the last named bearing being at the side sill of the car through which the shaft extends. The bearing is ,therefore providedfwith angularly related walls respectively secured to the web and lower flange of the side sill to reinforce the cut-away portion. The side sill is further reinforced adjacent the cut-away portion by 'an angle shaped member 72 (Fig. 5) extending below the side sill and connected thereto and to the bearing of the adjacent stake.

The side sill member is further reinforced at the cut-away portion by an overlying plate 73 (Fig. 6) secured to the outer face of the side sill and extended upwardly and secured to flange 37 of the door framing by rivets 173.

Connecting the shaft and door is the winding means M (Figs. 3, 4 and 6). There are preferably two for each door.' Each operating means consists of a series of links 74, 75, 76 and 77, said links being flexibly united by rivets 78 andconnected at one end to bracket 79, the latter being carried by the door, and united at the opposite end to a hub casting 80. The hub 80 is rigidly secured to the shaft L and is provided with a series of faces corresponding in number to the number of the links and around which faces the links are adapted to wind. Thebracket member 7 9 on the door is bifurcated to present spaced walls 81-81 adapted to st raddle portions of the mechanism when the shaft is in operative locking position. A portion of the door bracket 79 is provided with a forwardly projecting portion extending in the plane of the depending flange 49 Aof the angle member 47 and the said flange is cut away atA 8l to accommodate the said portion and also the winding links during the rotation of the mechanism. The shaft L is so locatedrelatively to the door and the car structure thatwhen the door is in closed position, the longitudinal axis of the shaft extends transversely through the eide sill and center sill approximately at the longitudinal neutral axes of said sills, the shaft in the presentembodiment lying slightly below the neutral axis of the side sill, as indicated at 82, and slightly above that of the center sill structure, as indicated at 83.

The shaft L moves to the outer-end of the bearings when the doors are released and during the winding action of the links certain portions of the winding mechanism extend above the centerv sill into'the recess provided by the upwardly spaced floor section 45.

The shaft operating mechanism N includes a clutch device providing lost motion to prevent injury to the operator, said device being here indicated conventionally by illustrating a squared portion 84 (Fig. 6) adapted to be engaged by an operating tool, said member cooperating with a hollowy ratchet member 85 iixedly mounted on the shaft and provided along its periphery with a series of external teeth 86. Cooperable with the teeth 86 to prevent rotation of the shaft in an unwinding direction is the pivoted pawl 87, said pawl being adapted to be locked in position by a dog 88. The pawl and dog are pivotally mounted on lugs formed integrally with base plate 89. Said pawl and dog and base plate, in cooperation with an over-lying tie plate 90, are riveted to the plate 7 3 by rivets 91, the rivets lying between the top of the side sill and the floor 'frame K.

I am aware that changes may be made in the construction, combination and arrangement of parts, lWithout departing from the spirit of the invention, and I hereby reserve the right to make such changes. as fairly fall within the scope of the appended claims.

I claim:

l. In a car of the character described having center sills, crossmembers outstanding from said center sills, and a floor of appreciable thickness above said center' sills and crossmembers, the combination of means forming discharge door openings in transverse alignment on each side of the center sill, said means comprising a self-contained framework including edge floor plates adapted to extend around the door openings, and members extending from door to door across the plane of the center sill.

2. In a car of the character described having side walls, center sills, crossmembers outstanding from said center sills and a floor of appreciable thickness above said center sills and crossmembers, the combination of'means forming discharge door openings transversely aligned and on each side ofthe center sill, said means comprisingl a self-contained framework including edge fioor plates defining the margins of the door openings, and members extending from side to side of the car and secured to the respect-ive side walls.

3. In a car of the character described, the combination with a center sill, crossbeams spaced lengthwise of the car and side wall members; the combination of fixed floor sections Of appreciable depth disposed above and carried by certain` of said crossbeams, said fixed floor sections terminating adjacent cer-v tain of the crossbeams thereby leaving a clear space intermediate a pair of crossbeams, a dumping door hinged adjacent one end of said clear space on an axis extending transversely of the car, said door being disposed with its upper surface substantially in alignment with the upper surface of the fixed floor and having its free edge terminating an appreciable distance awa-y from the other edge 1 of the space, and a door frame disposed in said clear space and spanning the distance intermediate the free edge of the door and the fixed floor edges to provide edge members around the four edges of the doors.

4. In a railway car of the level iioor type, the combination of a center sill, crossbeam diaphragm members spaced apart lengthwise of the car, a dumping door in the floor of the car intermediate said crossbeam diaphragms, said door being hinged adjacent one crossbeam diaphragm with its hinge axis extending transversely of the car, cover plates for the crossbeam diaphragm members oifset to one side thereof, the coverplate for the crossmember adjacent the hinge of the door being disposed beneath the level of the door, and the crossbeam cover plate adjacent the free edge of the door having a raised portion constituting a floor plate extending above thedoor and forming an edge sealing plate for the free edge of the door.

5.' In a railway car of the character described, the combination of an underframe and crossbeam members extending outwardly therefrom and having flooring of appreciable depth carried by the said underframe member, aside truss frame rising upwardly from the outer ends of the crossbeams, said flooring having a dumping opening extending intermediate the lpair of crossbeams and the side walls and center sill of the car, dumping doors disposed in the openings on each side of the center sill, said doors being adapted when in closed position to have their floor surfaces `disposed substantially flush with theV flooring surfaces, and metallic floor members adjacent the hinged and side edges of the doorextending transversely from side to side of the car, said members adjacent the sides of the car being of langle shape having a flange secured directly to said side truss niembers andl having adjacent flanges overlying and secured to the transversely extending floor members.

6. In a carof the character described having center 'sill and crossbeams extending outwardly therefrom, the combination of a wooden flooring of appreciable thickness disposed above the plane of the said underframe members, a pair of aligned dumping doors disposed on opposite sides of the center sills and hingedly mounted to the crossbeam for swinging movement on axes transversely of the car, each said door when in closed position having its floor surface substantially in alignment with the flooring surface, the free edge of the door when lin closedposition being spaced an appreciable distance from the wooden flooring, a metallic floor plate forming a floor of reduced thickness spanning the distance between the wooden flooring and the free edge of the door, and door operating mechanism positioned beneath the metallic iioor plate.

7. In a car of the character described, the combination of a pair of crossmembers spaced apart lengthwise of the car, a dumping door hingedly mounted adjacent one of said members of the pair, said door when in closed position terminating an appreciable ist-ance from the other crossbeam of the pair, and a crossbeam cover plate bridging the space between the last named crossbeam and the free edge of the door when the door is in closed position. 8. In a dump car, the combination of a center sill, a crossbeam including a diaphragm and a top cover plate, said cover plate being disposed to one side of the diaphragm, a wooden iioor of appreciable thickness carried by said crossbeam and terminat-` ing adjacent the edge of said cover plate, and a dumping door inset in the wooden floor and mounted on hinge `brackets carried by the crossbeam diaphragm, each of said brachets having a portion thereof extended upwardly across the plane of the crossbeam over plate and having a h inge pivot for the oor. Y

9. In a dump car of the character described, the combination of a center sill, a crossbeam diaphragm, a cover plate carried by said crossbeam, a wooden floor of appreciable thickness carried by the crossbeam, and terminating adjacent the edge of the cover plate, a dumping door inset in the plane of the wooden floor and mounted upon hinge brackets carried byV the crossbeam, said brackets having a portion thereof exten-ded upwardly across the plane of the cover plate and having a door supporting pivot, said door being formed with a roundv edge substantially concentric with the pivotal axis of the door, and an edge floor plate mounted on the iioor and extended into the plane of the door, said plate being substantially tangent to the rounded edge of the door whereby said rounded edge vof the door will be tangentially related to the edge floor plate in all positions of the door.

l0. In a dump car, the combination of a center sill, a crossbeam including a flanged diaphragm and a top cover plate, said cover plate being disposed toone side of the diaphragm, a wooden floor of appreciable thicltness carried by said crossbeam and terminating adjacent the edge of the cover plate, an edge floor plate carried by said iioor and extending slightly beyond the edge of the floor, means for securing said` plate in position including bolts extending through the wooden vfloor, crossbeam cover plate and diaphragm,

a dumping door in said floor having a hinge axis 1n the plane of the wooden floor adjacent the crossbeam diaphragm, said door having CII a rounded edge substantially concentric with said axis and tangentially related to the edge floor plate in all positions ot the door.

11. In a car of the character described, the combination of a center sill, a pairof transverse crossbeains spaced apart lengthwise of the car, a flooring of appreciable thickness carried by said crossbeams, a door` hinged on an axis extending substantially parallel to and immediately adj acent one ot said crossbeams, said door being inset in the floor with its lioor surface substantially coincident with the flooring surface of said door being 'formed with its pivotal axis disposed in the plane ot the'ilooring and having its tree edge spaced outwardly from the other crossbeam, a metal floor bridging the space intermediate the free edge of the door and the said cross cam and disposed at an appreciable distance above the level of the center sill to thereby provide a recess, a door winding and supporting shai't disposed below the level of the door, and winding mechanism conn" ting the'sliaft and door, said mechanism vduring the operation of the door being adapted t-o have a portion thereof move above the level of the center sill and into said recess.

1Q. In a car of the character described, the combination of a center sill, crossbeams, side wall stakes extending upwardly adjacent the outer ends of the crossbeams and in cooperation therewithidividing the car lengthwise in twelve panels, fixed floor sections in certain vof the panels alternated with pairs of dumping doors in certain other panels, said respective doors of a pair being disposedy on opposite sides of the center sill in aligned relation, said fixed floor sections including three main sections each extending over two panels and respectively disposed at the central portion ofthe car-and at each end thereof; and parts vof dumping doors in the panels adjacent the end ot' each said end section and adjacent each end of the central section, said two pairs ot doors at each end of the car, being separated lengthwise of the car by fixed floor section in the intervening panel.

18. In a car of the character described having the usual truck parts at each end thereof, said car including Yan underframe having center sill, side wall stakes and crossbeams spaced lengthwise of the car and secured to the stakes, said crossbeam members including the combination with top cover plates; fixed wooden 'floor sections of appreciable thickness disposed above the underframe and extending over the truck parts and over vcertain of the crossmembers, said floor sections being spaced apart to forni dumping openings disposed between certain o'f the fixed floor sections and adapted to direct lading away therefrom; dumping doors for the openings, said doors being hinged onvtransversely extending axes disposed immediately adjacent the crossb'eam to direct lading away from the ends of the car, said crossbeam members and top cover plates beingl odset to one side of the stakes in a direction towards the end ot the car for the purpose of reducing the load retaining area of the lixed floor section above the truck parts and increase the discharging etliciency of the car.

lll. ln a car of the character described having the usual truck parts adjacent each end thereof, said car including an underframe having center sills and transverse crossbeam members spaced lengthwise of the car, said crossbeam members includingtop cover' plates, and side wall stakes adjacent the ends of the crossbeam members, in combination with fixed floor sections of appreciable thickness disposed above the vunderirame and extending over the truck parts Vand above certain of the crossbeam members, said lloor sections being spaced apart to l'orm dumping openings disposed between said lixed licor sections; dumping doors for the openings, said doors bein/g hinged on transversely extending axes to direct lading away from the fixed floors, said doors being arranged in pairs in transversely aligned relation, each pair of doors being hinged adjacent a crossbeam member to direct lading away from the ends of the car towards the transverse center thereof, said crossbeams and top cover plates of the respective crossbearns being offset to one side of the stakes in a direction towards the end of the car for the purpose of reducing the load retaining area of the fixed ioor section above the trucks and thereby increase the discharging eiliciency of the car.

15. In a car of the character described having an underframe including a center sill, crossbeani members, a iioor carried by said center sill and crossbeams, and a side wall structure including a portion extending below the floor and having an outstanding flange along the lower margin thereof and a side stake extending below said 'wall structure, 'in combination with a dumping door hinged on an axis extending transversely of the car, a door operating shaft extending through the side wall structure below the floor and above the lower flange, and being disposed adjacent the stake, said wall being` slotted to admit the shaft, a winding connection between the shaft and door, and a reinforcing llanged member below the anged side wall structure and secured thereto and to the downwardly extended portion of the stake, said member extending from the stake beyond the slotted portion of the wall member. f

16. In a car of the character described including center sills, crossbeams and a side wall structure including a trussed side frame, said side wal truss including a side sill member constituting the lower chord of the truss and having its npperportion substantially the same level-as the center sills and crossbeams, in combination with a wooden Hoor of :ap-

essaies Y Y 'a' preciable thickness carried by said members and having dumping openings, a metal :trameworlr defining the edges of the dumping open ings, said framework being spaced from the top of the side sill a distance to clear the wooden floor and having iianged portions connected tothe truss trame; dumping doors adapted to close the openings, said doors being hinged on axes extending transversely of the car; a plate secured to the side sill and eX- tended upwardly across the intervening space between the sill and framework and secured to the flanged portions of the latter; a door operating shaft adjacent the free edge ot the door and extending through the sill plate, a winding connection between the shaft and door; a ratchet on the shaft, and pawl mechanism cooperable with the ratchet to maintain the shalt against reverse rotation, said pawl mechanism being mounted on the plate intermediate the frame and side sill.

17. As an article of manufacture, a door frame for application to railway cars of the level floor type having center sills, crossbeams, and two transversely aligned door openings on opposite sides oi' the center sill, said trame including spaced parallel transverse members adapted to extend across the car and dellining opposite edges of the two openings, and other members extending lengthwise of the car and disposed adjacent the ends of said transverse members and intermediately thereof secured to the said transverse members, said lengthwise members adjacent the ends of the frame being eX- tended at one end beyond the associated transverse member for attachment to the car structure.

18. As an article ot manufacture, a door frame for application to railway cars ol the level floor type having center sills, crossbeams and two transversely aligned door openings on opposite sides of the center sill, said frame including spaced parallel members adapted to extend across the car and delining opposite edges of the two aligned door openings, and other members extending lengthwise oi the car to complete with said lirst named members the two door openings ot the door frame, one of said transversely extending members having the edge thereoil opposite to the door opening and being Jormed of Z shape for attachment with v the car structure.

19. As an article of manufacture, a door frame for application to railway cars of the level floor typehaving center sills, side walls and two transversely aligned door openings in the floor on opposite sides of the center sill, said frame including spaced parallel members extending across the car and delining opposite edges of the two openings, and other members extending lengthwise of the car and secured to said iirst named members, said lengthwise members being adapted to lie respectively adjacent the center sills and side walls of the car and having upstanding portions or attachment to the car sides.

20. As an article of manufacture, a frame for application to dumping railway cars of the gondola type having center sills, crossbeams, side walls and two transversely aligned dumping openings on opposite sides of the center sill, said frame including spaced parallel members adapted to extend across the car and defining opposite edges of the two openings and other members extending at substantially right angles to said first named members and secured thereto and adapted in cooperation with the irst named members to complete the door frame for the two door openings.

1n witness that l claim the foregoing I have hereunto subscribed my name this 22nd day of November 1929. Y

ARGYLE CAMPBELL.

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